what is the highest possible score you can get in scrabble, using only seven tiles. no add on's. ?

The highest scores available for playing a single word without contrived or highly unlikely circumstances involve an 8-letter word played across two triple-word-score squares, with a high-scoring tile on the double-letter-score square in between, and using a single letter previously played on a non-premium square. The scores include the 50-point bonus (nicknamed a "bingo") for playing all 7 tiles. [Description by Mark Brader.] Scrabble in North America recognizes five words worth 392 points in this situation: OXAZEPAM, BEZIQUES, CAZIQUES, MEZQUITS, and MEZQUITE [Craig Rowland]. However, the Official Scrabble Words, based on Chambers, includes QUIZZIFY for 419 (not 509 since only one Z is available and a blank must be used for the other). Other high-scoring words include WHIZBANG, QUETZALS, and HIGHJACK (each 374); QUIXOTIC (356); and MUSQUASH (338) [Bruce D. Wilner].

quartz?